11x13 vs Flash Math

A short problem, nine answers, one correct — 11x13 trains mental math with no clutter and no words in the problems. THE BASIC OPERATIONS ARE FREE. NOW AND FOREVER. Addition, subtraction, multiplication and division with level bands that grow with you: from small times tables over carrying to the 11–19 tables — the app's namesake — plus chained problems like 47 + 8 + 6 at high levels. WITH “EVERYTHING” YOU PRACTICE EVERY OPERATION. Unlock every package permanently with a one-time purchase or for the duration of a subscription. The 14-day app trial ends automatically without starting a subscription: • Percentages: from 50% of round numbers to surcharge and discount • Roots: squares and cube roots • Powers: up to powers of two and ten • Derivatives and integrals: from monomials to binomials • Geometry: symbol equations (▲ + ▲ = 12), counting corners, matching shapes • Fractions: adding like fractions, simplifying, unlike denominators, multiplying Your progress grows per operation, syncs via iCloud, with progress charts and a Game Center leaderboard. Easy to keep at it: a daily practice reminder at the time you choose, a Home Screen widget with the problem of the day, and statistics with streak, week-over-week comparison and band history. With a true iPad layout and hardware keyboard support (keys 1–9). Subscriptions renew automatically until cancelled in App Store subscriptions. A one-time purchase provides permanent access. Mistake notebook: The last 100 tasks you answered incorrectly are saved on this device. Review up to ten tasks without time pressure. A task leaves the notebook after a correct first answer in two separate rounds. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Flash Math Simple flash card math. No ads, no subscriptions, no logins. Just getting better at mental math. Pick a category, pick a format, and go. That's it. Three ways to play: • 20 Problems — focused, untimed sets to build accuracy • Survival — answer until your first mistake, then beat your streak • 30 Second Rush — how many can you answer in 30 seconds? Three categories: • Addition & Subtraction — single, double, and triple digit • Multiplication — every times table from ×2 through ×12 • Grade Levels — mixed problem sets for 1st, 2nd, and 3rd grade Track your streak, accuracy, and total problems solved. Unlock achievements as you improve. See exactly how you perform on every multiplication fact and digit range. Privacy first. All your progress lives on your device. Nothing is collected, shared, or tracked. No account needed, ever. --- Optional upgrades — one-time purchases, not subscriptions: • Color Scheme Pack — unlock Dark, High Contrast, and five more themes • Lifelong Gold Member — advanced stats, color schemes, and everything we add in the future The core app is free. The math is always free.